Study compares PVT calculation methods for nonblack oil fluids

A comparison of different methods for generating pressure-volume-temperature (PVT) properties of volatile oil and gas-condensate reservoir fluids determined that PVT properties generated with the Whitson and Torp method agree the best with full equation-of-state (EOS) compositional simulation.Besides the comparison with the EOS compositional simulation, the study also compared the initial-oil-in-place (IOIP) calculations with the generalized material-balance equation.The study included a wide range of fluid characteristics from nine reservoir fluid systems: six gas condensate, two volatile oil, and one wet gas.Material balanceMaterial-balance calculations are useful for analyzing reservoi...

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